Questions
A satellite is rotating in a circular orbit of radius r is around earth with speed V. Due to some reason, its speed is increased to . Then the satellite
a
will start moving in a circular orbit of radius 2 r
b
will start moving in an orbit of major radius 2r.
c
will escape from the gravitational field of earth
d
will start moving in an elliptical orbit of major radius 4r.
detailed solution
Correct option is C
V = orbital speed =GMrwhen the speed is increased, V1=2V=2GMrBut 2GMr is the escape velocity at any point on the circular orbit of radius r. Hence option (3) is right.Talk to our academic expert!
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